auxiliaryData property
Optional auxiliary data (e.g. CIP-20 memo metadata), already CBOR-encoded. If set, its Blake2b-256 hash is committed in the transaction body (key 7, auxiliary_data_hash) and these bytes are embedded as the signed transaction's auxiliary_data, so the caller does not append anything. The automatic fee planner includes this field in its size/fee estimate.
Implementation
@$pb.TagNumber(12)
$core.List<$core.int> get auxiliaryData => $_getN(11);